...businesspeople who serve or supply the security forces.
businessperson in British English
(ˈbɪznɪsˌpɜrsən)
nounWord forms: plural-people or -persons
a person engaged in commercial or industrial business, esp as an owner or executive
▶ USAGE The gender-neutral form of businessman and businesswoman is businessperson, but it does not appear to be very widely used. The plural business people is quite widely used, and if you wish to avoid being gender-specific, you could tryrecasting your sentence to use the plural
businessperson in American English
(ˈbɪznɪzˌpɜrsən; ˈbɪznɪsˌpɜrsən)
noun
a person in business
used to avoid the sexist implications of businessman and businesswoman